Scientists have debunked the belief that using tools is unique to mammals and birds, after documenting tropical ... use in multiple species of wrasses—a colorful reef fish.

At the base of the Grand Teton Mountain range, a new fish species tinged with green was identified as separate from its blue brethren.

Setting up a perfect aquarium is both an art and a science, requiring an understanding of aquatic ecosystems and a bit of aesthetic flair. A well-crafted aquarium not only enhances your home decor but ...

A fish is a cold-blooded aquatic vertebrate with gills, a swim bladder, and paired fins. Though this description may seem specific, the size, color, and habits of fish actually vary drastically.

An aquarium keeper looked at his newest find. He didn’t know it right away, but he’d discovered a new species. Farham Sangma, a “fish hobbyist” who “often collects fish for the aquarium ...